Home / 1,020,240,909.80-1,530,361,364.70-330,217,915.40

Finding the Fourth Proportional to 1,020,240,909.80, 1,530,361,364.70 and 330,217,915.40

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Solution

The fourth proportional to 1,020,240,909.80, 1,530,361,364.70 and 330,217,915.40 is: 495,326,873.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,020,240,909.80 : 1,530,361,364.70 = 330,217,915.40 : x
  2. Step 2: Convert to fraction form
    1,020,240,909.80/1,530,361,364.70 = 330,217,915.40/x
  3. Step 3: Cross multiply
    1,020,240,909.80x = 1,530,361,364.70 × 330,217,915.40
  4. Step 4: Simplify right side
    1,020,240,909.80x = 505,352,739,659,933,120
  5. Step 5: Solve for x
    x = 505,352,739,659,933,120/1,020,240,909.80
  6. Step 6: Final answer
    x = 495,326,873.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.